#include<iostream >
using namespace std;
class Date
{
public:
	//Date()
	//{
	//	_year = 1;
	//	_month = 1;
	//	_day = 1;
	//}
	//Date(int year, int month, int day)
	//{
	//	_year = year;
	//	_month = month;
	//	_day = day;
	//}
	void print()
	{
		cout << _year << endl;
		cout << _month << endl;
		cout << _day << endl;
	}
	void fun()
	{
		cout << this << endl;
	}
private:
	int _year;
	int _month;
	int _day;
};
void test1()
{
	Date d1;
	d1.print();
}
int main()
{
	test1();
	return 0;
}